Lesson 9: Sunlight’s Effect on Plant Growth

What is the main focus of Lesson 9?

• The life cycle of a butterfly

• The water cycle

• The types of ecosystems in Virginia

• The effect of sunlight on plant growth

What is the first step in the scientific method?

• Sharing results

• Conducting an experiment

• Asking a question

• Forming a hypothesis

What is a variable in an experiment?

• Something that never changes

• A question to be answered

• Something that may change

• A type of plant

What is a constant or control in an experiment?

• A variable that changes

• A type of hypothesis

• A type of question

• A variable that stays the same

How should a hypothesis be structured?

• With the words 'if' and 'then'

• With a conclusion

• As a question

• As a list of variables